Description
This 5814WB tube is made by Sylvania in the USA.
This military spec 5814WB is a premium quality 12AU7A tube is made by Sylvania in the USA. It has a triple mica reinforcement, grey plates with copper grid posts and a halo getter. The 5814WB is a extremely reliable, long life and low noise version of a 12AU7A tube which is meant for military, professional or postal purposes. The tube is manufactured in the sixties.
The sonic properties of theSylvania 5814A are highly regarded for e.g. musical instrument amplifiers. One of the more dynamic 12AU7A’s. I refer to the threads on the web for more information.
This tube is thoroughly tested and matches the factory specifications extremely well. See test results in the section below.
Test results
Test methods and test conditions are outline on the tube testing page.
The measurement data below illustrate that the tub is internally balanced; better that 5%.
| Valve
V232 |
Ia (plate current):
Transconductance (Gm): Gas test, Shorts test: |
pm / pm mA
pm /pm mA/V OK |
= NOS / NOS
= NOS / NOS
|
Where NOS is : Ia = 8,7 til 12,5mA, Gm= 1,9 til 2,7 mA/V. (Telefunken factory specification see test page)
(Telefunken factory specification see test page)
Summarized description
| Tube type | 5814WB |
| Quantity of Tubes | One tube |
| Brand | Sylvania |
| Manufactured in | USA |
| Date code | BB JAC |
| Plate Construction | Grey plates, copper grid posts |
| Getter Construction | Tilted halo getter |
| Print Condition | See pictures |
| Box included | Original factory box |
| Equivalent tubes: | 12AU7, ECC802S, ECC82, 13D8 , CV4003, CV491, 5814 , 7730, 5963 |
| General test results | NOS |
Please read our test and shipping policy before buying also !
